{"id":"CVE-2011-2928","aliases":["DSA-2303-1","DSA-2310-1","EUVD-2011-2901","GHSA-xfqf-cw5p-jvwq"],"status":"published","title":"The befs_follow_link function in fs/befs/linuxvfs.c in the Linux kernel before 3.1-rc3 does not...","description":"The befs_follow_link function in fs/befs/linuxvfs.c in the Linux kernel before 3.1-rc3 does not validate the length attribute of long symlinks, which allows local users to cause a denial of service (incorrect pointer dereference and OOPS) by accessing a long symlink on a malformed Be filesystem.","severity":{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00506,"percentile":0.43507,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2011-08-29T17:00:00Z","modified":"2026-06-16T23:32:16Z","affected":[{"source":"osv","ecosystem":"Debian:6.0","package":"linux-2.6","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.32-35squeeze1"}]}],"versions":["2.6.32-30","2.6.32-30+m68k.5","2.6.32-31","2.6.32-31~bpo50+1","2.6.32-32","2.6.32-33","2.6.32-34","2.6.32-34squeeze1","2.6.32-35","2.6.32-35~bpo50+1"],"bundled":18},{"source":"osv","ecosystem":"Debian:5.0","package":"linux-2.6","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6.26-26lenny4"}]}],"versions":["2.6.26-13","2.6.26-13lenny2","2.6.26-13lenny2~bpo40+1","2.6.26-14","2.6.26-15","2.6.26-15lenny1","2.6.26-15lenny2","2.6.26-15lenny3","2.6.26-15~bpo40+1","2.6.26-15~bpo40+2","2.6.26-16","2.6.26-17","2.6.26-17lenny1","2.6.26-17lenny2","2.6.26-17lenny2~bpo40+1","2.6.26-17~bpo40+1","2.6.26-18","2.6.26-19","2.6.26-19lenny1","2.6.26-19lenny2","2.6.26-19~bpo40+1","2.6.26-20","2.6.26-20~bpo40+1","2.6.26-21","2.6.26-21lenny1","2.6.26-21lenny2","2.6.26-21lenny3","2.6.26-21lenny4","2.6.26-21~bpo40+1","2.6.26-22","2.6.26-22lenny1","2.6.26-23","2.6.26-24","2.6.26-24lenny1","2.6.26-25","2.6.26-25lenny1","2.6.26-26","2.6.26-26lenny1","2.6.26-26lenny2","2.6.26-26lenny3"],"bundled":17}],"products":[{"vendor":"linux","product":"linux_kernel"}],"references":[{"url":"http://www.openwall.com/lists/oss-security/2011/08/19/5","tags":["mailing-list","x_refsource_MLIST","x_transferred","Exploit","Mailing List","Patch","Third Party Advisory"]},{"url":"http://www.pre-cert.de/advisories/PRE-SA-2011-06.txt","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"http://www.securityfocus.com/bid/49256","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://www.openwall.com/lists/oss-security/2011/08/19/1","tags":["mailing-list","x_refsource_MLIST","x_transferred","Exploit","Mailing List","Patch","Third Party Advisory"]},{"url":"http://www.securityfocus.com/archive/1/519387/100/0/threaded","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=338d0f0a6fbc82407864606f5b64b75aeb3c70f2","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/69343","tags":["vdb-entry","x_refsource_XF","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://securityreason.com/securityalert/8360","tags":["third-party-advisory","x_refsource_SREASON","x_transferred","Exploit","Third Party Advisory"]},{"url":"http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.1-rc3","tags":["x_refsource_CONFIRM","x_transferred","Broken Link"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-2928"},{"url":"http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=338d0f0a6fbc82407864606f5b64b75aeb3c70f2"},{"url":"https://github.com/advisories/GHSA-xfqf-cw5p-jvwq"}],"sources":{"cve":[{"id":"CVE-2011-2928","description":"The befs_follow_link function in fs/befs/linuxvfs.c in the Linux kernel before 3.1-rc3 does not validate the length attribute of long symlinks, which allows local users to cause a denial of service (incorrect pointer dereference and OOPS) by accessing a long symlink on a malformed Be filesystem.","status":"published","published":"2011-08-29T17:00:00Z","modified":"2024-08-06T23:15:31.676Z","updated_at":"2026-11-02T14:35:36.603688Z"}],"euvd":[{"id":"EUVD-2011-2901","description":"The befs_follow_link function in fs/befs/linuxvfs.c in the Linux kernel before 3.1-rc3 does not validate the length attribute of long symlinks, which allows local users to cause a denial of service (incorrect pointer dereference and OOPS) by accessing a long symlink on a malformed Be filesystem.","status":"published","published":"2011-08-29T17:00:00Z","modified":"2024-08-06T23:15:31Z","updated_at":"2026-11-03T01:39:53.544801Z"}],"ghsa":[{"id":"GHSA-xfqf-cw5p-jvwq","title":"The befs_follow_link function in fs/befs/linuxvfs.c in the Linux kernel before 3.1-rc3 does not...","description":"The befs_follow_link function in fs/befs/linuxvfs.c in the Linux kernel before 3.1-rc3 does not validate the length attribute of long symlinks, which allows local users to cause a denial of service (incorrect pointer dereference and OOPS) by accessing a long symlink on a malformed Be filesystem.","status":"published","published":"2022-05-13T01:24:47Z","modified":"2023-02-21T05:06:26Z","cwes":["CWE-476"],"updated_at":"2026-11-02T14:54:11.906282Z"}],"nvd":[{"id":"CVE-2011-2928","description":"The befs_follow_link function in fs/befs/linuxvfs.c in the Linux kernel before 3.1-rc3 does not validate the length attribute of long symlinks, which allows local users to cause a denial of service (incorrect pointer dereference and OOPS) by accessing a long symlink on a malformed Be filesystem.","status":"published","published":"2011-08-29T17:55:00.83Z","modified":"2026-06-16T23:32:16.14Z","cvss":[{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:02:09.988332Z"}],"osv":[{"id":"DSA-2303-1","title":"linux-2.6 - several issues","status":"published","published":"2011-09-08T00:00:00Z","modified":"2026-03-09T01:19:45.85285Z","updated_at":"2026-11-02T15:46:15.108335Z"},{"id":"DSA-2310-1","title":"linux-2.6 - several issues","status":"published","published":"2011-09-22T00:00:00Z","modified":"2026-03-09T01:19:32.189014Z","updated_at":"2026-11-02T15:46:15.108335Z"}]}}